JPS56145437A - Diagnostic system for data processor - Google Patents

Diagnostic system for data processor

Info

Publication number
JPS56145437A
JPS56145437A JP4926180A JP4926180A JPS56145437A JP S56145437 A JPS56145437 A JP S56145437A JP 4926180 A JP4926180 A JP 4926180A JP 4926180 A JP4926180 A JP 4926180A JP S56145437 A JPS56145437 A JP S56145437A
Authority
JP
Japan
Prior art keywords
error
point
counter
value
register
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4926180A
Other languages
Japanese (ja)
Inventor
Satoshi Kobayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4926180A priority Critical patent/JPS56145437A/en
Publication of JPS56145437A publication Critical patent/JPS56145437A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE:To simplify an error diagnozing circuit by presetting a count number equivalent to the time between some point and an error occurrence point, by decreasing the value of a counter synchronizing with the clock of a data processor, and by generating error information when the count value reaches zero. CONSTITUTION:A count number of a clock equivalent to the time between some point and an error occurrence point is set in down counter 1 previously, and further a forcible error generation point is set in error register 3. As data processing progresses, the value of counter 1 is decreased synchronizing with a clock and once the value of counter 1 reaches zero, differentiating circuit 2 detecting the zero of counter generates a pulse obtained by differentiating a zero signal to apply the pulse to gate 4 which controls the transmission of the contents of register 3 to the data processor. As a result of the application of the pulse to gate 4, the error point set in register 3 is sent to the processor to realize the circuit constitution which facilitates a diagnosis of the processor.
JP4926180A 1980-04-15 1980-04-15 Diagnostic system for data processor Pending JPS56145437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4926180A JPS56145437A (en) 1980-04-15 1980-04-15 Diagnostic system for data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4926180A JPS56145437A (en) 1980-04-15 1980-04-15 Diagnostic system for data processor

Publications (1)

Publication Number Publication Date
JPS56145437A true JPS56145437A (en) 1981-11-12

Family

ID=12825878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4926180A Pending JPS56145437A (en) 1980-04-15 1980-04-15 Diagnostic system for data processor

Country Status (1)

Country Link
JP (1) JPS56145437A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62119651A (en) * 1985-11-20 1987-05-30 Fujitsu Ltd Ras circuit diagnosing system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49115632A (en) * 1973-03-07 1974-11-05
JPS49123747A (en) * 1973-03-31 1974-11-27
JPS50100942A (en) * 1973-12-03 1975-08-11

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49115632A (en) * 1973-03-07 1974-11-05
JPS49123747A (en) * 1973-03-31 1974-11-27
JPS50100942A (en) * 1973-12-03 1975-08-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62119651A (en) * 1985-11-20 1987-05-30 Fujitsu Ltd Ras circuit diagnosing system

Similar Documents

Publication Publication Date Title
JPS53149076A (en) Digital frequency detecting circuit
JPS57192876A (en) Measuring device for average frequency
JPS549563A (en) A-d converter
JPS56145437A (en) Diagnostic system for data processor
JPS5694270A (en) Digital display type vehicle speedometer
JPS55164176A (en) System for driving heat sensitive recording head
JPS5293883A (en) Process control system
JPS5423335A (en) Page detection mechanism
JPS5336A (en) Data input unit
JPS5372665A (en) Time characteristics measuring system for contacts
JPS5754432A (en) Count data input circuit
JPS5433060A (en) Printing recorder
JPS53132971A (en) Control method of electronic counter
JPS57179668A (en) Detecting circuit for frequency
JPS56114441A (en) Counting circuit
JPS5240155A (en) Process for measuring pulse information at a remote place
JPS5398673A (en) Sheet feed control system
JPS5563414A (en) Timing signal generation circuit
JPS52140246A (en) Information processing unit
JPS5426772A (en) Operational system
JPS57117003A (en) Measuring method of timing pulse
JPS5789136A (en) Data terminal equipment
JPS5561865A (en) Information processor
JPS5422137A (en) Bus line chekcing device
JPS5390841A (en) Electronic cash register